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Myobatrachidae, commonly known as Australian ground frogs or Australian water frogs, is a family of frogs found in Australia and New Guinea. Members of this family vary greatly in size, from species less than 1.5 cm (0.59 in) long, to the second-largest frog in Australia, the giant barred frog ( Mixophyes iteratus ), at 12 cm (4.7 in) in length.
Moor frogs from European Russia and Western Siberia are able to tolerate freezing to temperatures as low as -16 °C. Moor frogs from Denmark are only able to survive freezing temperatures as low as -4 °C for 3 to 4 days. The minimum freezing temperatures at which frogs are able to survive with 0% mortality is different between frog populations.
Some frogs such as the wood frog, moor frog, or spring peeper can even survive being frozen. Ice crystals form under the skin and in the body cavity but the essential organs are protected from freezing by a high concentration of glucose.
When studying ice concentration of overwintering frogs, 40-50% of total body water was frozen. [14] Studies have revealed that Cope's gray treefrog could be more resilient to climate change in the long-term, though populations may suffer short-term drawbacks. [15] Either way, distribution will hopefully change little in the long-term because of ...
In the late 1960s, an expedition led by Jacques Cousteau reported Titicaca water frogs up to 60 cm (2 ft) in outstretched length and 1 kg (2.2 lb) in weight, [11] [12] [13] making these some of the largest exclusively aquatic frogs in the world (the exclusively aquatic Lake Junin frog can grow larger, as can the helmeted water toad and African goliath frog that sometimes can be seen on land). [14]
Cuban tree frogs are the largest tree frogs in North America, ranging from 2 to 5.5 inches or (5 to 12.7 cm) in length. [8] Cuban tree frogs are mostly gray, brown, or green, with young frogs having more green coloration than adults. These frogs have rough, warty skin with blotchy or mottled patterning. [9]
Tree frogs are members of these families or genera: Hylidae, or "true" treefrogs, occur in the temperate to tropical parts of Eurasia north of the Himalayas, Australia and the Americas. Rhacophoridae, or shrub frogs, are the treefrogs of tropical regions around the Indian Ocean: Africa, South Asia and Southeast Asia east to Lydekker's line.
Depending on the situation, the spots may change color from the lighter gray/brown to a darker black spot. The colors on the frog's back are also used to attract mates. The shape of the frog's head is most commonly an oval with the mouth coming out to a slight specific point. Adult frogs range from 50 to 65 mm in length.